1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef1210279104c650eeafcf4629143eb65b12e48f4e772e6e0dd2b6ee59e5df66. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/38f68fc7-6c4b-4a01-a715-e9c4c1143c84.json and https://artists.proofprofile.net/proofs/artist/38f68fc7-6c4b-4a01-a715-e9c4c1143c84.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f5b1f3032014432ac51b0f8ec887e65ae3e9ec3995410aa3a8736bf84f8072. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEN2077365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86543b5a2ba6dc81e5cb2202c8db53a4b714697cd321ec242b42ff288d466e49. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DKADG2201142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6825712ce0c00549b319f69c1dcb1c16578eb5923b019244e4ea7e927fbf7ea. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DKADG2400085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97f8bb5ac23c705d527b47b147e351e0e195af6c208488cf9929d1aed8b47f8. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DKADG2400528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a3f54a7871a21589bdd98210ffb701001d74f4aaae011242484f79561cc2ef. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DKADG2400647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97f8bb5ac23c705d527b47b147e351e0e195af6c208488cf9929d1aed8b47f8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DKADG2400528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6825712ce0c00549b319f69c1dcb1c16578eb5923b019244e4ea7e927fbf7ea. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DKADG2400085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6949f282e661040453db9ffd9f0d5372a54fcf4c47c4321806ff9826344a759f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DKADG2400636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a811617d583dcecabbc10b2ba145550dc96fd56e48b83c360d43b4cfc04c8a. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DKADG2400651.
When Are You Coming Home (with Camilla Dayyani)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf93274357d223ff7e85d6eb730a2c2003ccd69f503e985bbfc5bf3cbfca3f9d6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DKADG2400652.
Live in Copenhagen @ SMK, National Gallery of Denmark
Ask If You're Okay (with Crate Classics)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x994119f92d6266322894d7eedaa1c1d2a00811d3683f9781fc5b504db2b3a862. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DKADG2200998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5f0edf65f349490a4ccf904bc47e597acd59717b0bddde4839467c2f8676e8. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DKADG2300086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5f0edf65f349490a4ccf904bc47e597acd59717b0bddde4839467c2f8676e8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DKADG2300086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x994119f92d6266322894d7eedaa1c1d2a00811d3683f9781fc5b504db2b3a862. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DKADG2200998.